BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Common Grackle In Great Basin

All regionsGreat BasinGeneralists

Common Grackle in Great Basin has edged down: down 19% on the route-weighted index since 1993.

-19%Since 1993TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
13Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
17YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Common Grackle in Great Basin. See the full index history below.

Routes In Great Basin

Routes recording Common Grackle in Great Basin.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
LeadoreIDAHO42009
Mud LakeIDAHO42019
RirieIDAHO32017
PicaboIDAHO21991
BatesIDAHO22004
WillisNEVADA21999
BakerIDAHO12008
TriangleIDAHO11997
PocatelloIDAHO12000
Blackft ResIDAHO12007
Dougal ResIDAHO11998
PrestonIDAHO12022
Timpie SpgUTAH12001

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.